Liberia has reported its second case of Ebola on Tuesday after nearly two months of being Ebola-free.

Liberia had been declared officially Ebola-free on May 9 after it had gone 42 days with no new cases.

On Sunday, the body of a teenage boy was discovered in a rural area outside of the capital Monrovia and was confirmed to have the virus, Reuters reports. The news was not made public until Tuesday. People who came into contact with the boy have been isolated, and at least one of those patients has tested positive.

Though Liberia was declared free from Ebola infections in May, the outbreak has continued in Guinea and Sierra Leone, which share borders. “There is no known source of infection and there’s no information about him traveling to Guinea or [Sierra Leone],” a spokesperson for the ministry of health told Science.

So far, Ebola has infected 27,400 people in all three countries, killing over 11,200.